Chemistry:Breyite
From HandWiki
| Breyite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | Ca3.01(2)Si2.98(2)O9 |
| Crystal system | Triclinic |
| Space group | P1 |
| Unit cell | a0 = 6.6970(4) Å, b0= 9.2986(7) Å, |
| Identification | |
| Colour | colorless |
| Cleavage | not observed |
| |re|er}} | vitreous |
| Density | 3.072 g/cm3 |
| Ultraviolet fluorescence | non-fluorescent |
| References | [1] |
Breyite is a high pressure calcium silicate mineral (CaSiO3) found in diamond inclusions.[3][4] It is the second most abundant inclusion after ferropericlase, for diamonds with a deep Earth origin.[5][4] Its occurrence can also indicate the host diamond's super-deep origin. This mineral is named after German mineralogist, petrologist and geochemist Gerhard P. Brey.
CaSiO3 phase diagram showing Breyite is stable around 3-9 GPa[6]
References
- ↑ Brenker, Frank E.; Nestola, Fabrizio; Brenker, Lion; Peruzzo, Luca; Harris, Jeffrey W. (1 January 2021). "Origin, properties, and structure of breyite: The second most abundant mineral inclusion in super-deep diamonds". American Mineralogist 106 (1): 38–43. doi:10.2138/am-2020-7513. Bibcode: 2021AmMin.106...38B.
- ↑ "Breyite". https://www.mindat.org/min-53167.html.
- ↑ Alderton, David; Elias, Scott (2020) (in en). Encyclopedia of Geology. Elsevier Science. pp. 467. ISBN 9780081029091.
- ↑ 4.0 4.1 Brenker, Frank E.; Nestola, Fabrizio; Brenker, Lion; Peruzzo, Luca; Harris, Jeffrey W. (2021-01-01). "Origin, properties, and structure of breyite: The second most abundant mineral inclusion in super-deep diamonds" (in en). American Mineralogist 106 (1): 38–43. doi:10.2138/am-2020-7513. ISSN 1945-3027. Bibcode: 2021AmMin.106...38B. https://www.degruyter.com/document/doi/10.2138/am-2020-7513/html.
- ↑ "Breyite". https://www.mindat.org/min-53167.html.
- ↑ Milani, Sula; Comboni, Davide; Lotti, Paolo; Fumagalli, Patrizia; Ziberna, Luca; Maurice, Juliette; Hanfland, Michael; Merlini, Marco (2021-06-19). "Crystal Structure Evolution of CaSiO3 Polymorphs at Earth's Mantle Pressures". Minerals 11 (6): 652. doi:10.3390/min11060652. ISSN 2075-163X. Bibcode: 2021Mine...11..652M.
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